TABLE 5.
ADJUSTED EFFECT OF RISK FACTORS FOR FELLOW EYE INVOLVEMENT FROM MULTIVARIABLE COX PROPORTIONAL HAZARDS REGRESION MODELS STRATIFIED BY AGE BETWEEN PATIENTS WITH NONARTERITIC ANTERIOR ISCHEMIC OPTIC NEUROPATHY UNDER AGE 50 (NAIONy) AND AGED 50 AND OVER (NAIONo)
| RISK FACTOR* |
NAIONy N=92 |
NAIONo N=90 |
|---|---|---|
| Male gender | HR=0.66 | … |
| 95% CI=0.30 – 1.46 | ||
| P=.31 | ||
| Hypertension | HR=0.64 | … |
| 95% CI=0.31 – 1.33 | ||
| P=.23 | ||
| Diabetes | HR=4.54 | … |
| 95% CI=1.84 – 11.22 | ||
| P=.001 | ||
| Chronic renal failure | HR=3.87 | HR=19.54 |
| 95% CI=1.26 – 11.86 | 95% CI=2.21 – 172.50 | |
| P=.018 | P=.008 | |
| Crowded disc | HR=2.99 | |
| 95% CI=0.85 – 10.48 | ||
| P=.087 | ||
| Smoking | HR=0.68 | HR=2.18 |
| 95% CI=0.28 – 1.62 | 95% CI=0.88 – 5.41 | |
| P=.38 | P=.093 | |
| Migraine | HR=1.81 | … |
| 95% CI=0.79 – 4.18 | ||
| P=.17 |
CI, confidence interval; HR, hazard ratio.
*
Risk factors with P<.2 in the unadjusted analyses were entered into the multivariable Cox proportional hazards regression model.